Clueless somewhat new player need help with teams

Okay so I have played off and on for awhile now and i find myself struggling finally. To give you an idea of where i am content wise, i have finished regular quests and have made it to the mechine techincals. I feel like my teams are lack luster, i terms of leads i have Shiva Dragon Ser and Urd Bastet Ronove the new Monster Point Amaterasu an unfished Myr and Haku. Reincarnated Haku is who i usually use. I also have dark kali but i am not good enough to use her. My main team i guess you could say is Haku with subs of Kanna Hino Kagutsuchi(reincarnated) Urd and Scheat

Okay so I have played off and on for awhile now and i find myself struggling finally. To give you an idea of where i am content wise, i have finished regular quests and have made it to the mechine techincals. I feel like my teams are lack luster, i terms of leads i have Shiva Dragon Ser and Urd Bastet Ronove the new Monster Point Amaterasu an unfished Myr and Haku. Reincarnated Haku is who i usually use. I also have dark kali but i am not good enough to use her. My main team i guess you could say is Haku with subs of Kanna Hino Kagutsuchi(reincarnated) Urd and Scheat

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I'd be happy to make some suggestions if you could post your box or link to a padherder or something.